<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div{
            width: 200px;
            height: 200px;
            background-color: red;
            line-height: 200px;
            text-align: center;
            border: 1px solid black;
            font-size: 50px;
            margin: 0 auto;
            transform: skewX(-30deg);
            /* transform: skew(30deg,-30deg); */
            /* 
                skewX
                skewY
                skew(x,y)
            */
        }
    </style>
</head>
<body>
    <div>笑笑酱酱</div>
</body>
</html>